【PAT Advanced Level】1006. Sign In and Sign Out (25)

来源：互联网发布：mysql如何查看编辑：程序博客网时间：2024/05/11 20:43

关键在于清空字符数组和使用scanf进行输入

#include <stdio.h>#include <string.h>#include <fstream>#include <iostream>using namespace std;int main(){int num;while (scanf("%d", &num) != EOF){char earlest[20];char lastest[20];char thisone[20];int h1, h2, m1, m2, s1, s2;scanf("%s%d%*c%d%*c%d %d%*c%d%*c%d", &thisone, &h1, &m1, &s1, &h2, &m2, &s2);int ear = 3600 * h1 + 60 * m1 + s1;int lat = 3600 * h2 + 60 * m2 + s2;memcpy(earlest, thisone, sizeof(thisone)/sizeof(char));memcpy(lastest, thisone, sizeof(thisone)/sizeof(char));num--;while (num--){memset(thisone, 0, sizeof(thisone)/sizeof(char));scanf("%s%d%*c%d%*c%d %d%*c%d%*c%d", &thisone, &h1, &m1, &s1, &h2, &m2, &s2);int tmp1 = 3600 * h1 + 60 * m1 + s1;int tmp2 = 3600 * h2 + 60 * m2 + s2;if(ear > tmp1) {//earlest[0] = '\0';memset(earlest, 0, sizeof(earlest)/sizeof(char));memcpy(earlest, thisone, sizeof(thisone)/sizeof(char));ear = tmp1;}if(lat < tmp2){//lastest[0] = '\0';//清空字符数组，也可以用下面一种方法，更为保险memset(lastest, 0, sizeof(lastest)/sizeof(char));memcpy(lastest, thisone, sizeof(thisone)/sizeof(char));lat = tmp2;}}printf("%s %s\n", earlest, lastest);}}